Vacuum cleaning apparatus



June. 20, 1933. c. OTTO VACUUM CLEANING APPARATUS Filed Feb. 8, 1930Patented June 20, 1933 CARL OTTO, F .ESSEN-BREDENEY, GERMANY VACUUMCLEANING APPARATUS Application filed February 8, 1930, Serial No.427,018, and in Germany March 23, 1929.

My invention relates to improvements in vacuum cleaning apparatus, andmore particularly in apparatus of the type comprising an automaticallyoperated beater. The

object of the improvements is to provide an apparatus of this classwhich is effective in operation, and with this object in view myinvention consists in mounting the beater on a member hay'ing a circularpath.

The said member may have a circular reciprocating movement. But I preferto rotate the same, for example by means of an electromotor.

Another object of the improvements is to provide an apparatus having a'high sucking action, and with this object in View the blades of theexhauster are mounted on the said rotary member and disposed so thatthey produce the vacuum for taking 2 the dust from the surface to becleaned, or

that they assist the action of the main exhauster or vacuum pump.

For the purpose of explaining the invention an example embodying thesame has been shown in the accompanying drawing in which the samereference characters have been used in all the views to indicatecorresponding parts. In said drawing,

Fig. 1 is a sectional elevation showing the mouthpiece of the "acuumcleaning apparatus, and.

Fig. 2 is a sectional elevation taken on the line 2-2 of Fig. 1.

In the example shown in the figures the casing a providing themouthpiece of the vacuum apparatus has the axle b of the armature 0 ofan electromagnet fixed thereto, and on the said axle a cylindricalcasing (1 providing a short-circuit rotor is rotat-' 40 ably mounted.The axle b is provided with a longitudinal bore for the leads of thearmature. The outer Wall of the casing (Z carries longitudinal ribs orcleats e and brushes f for beating and brushing the surface to becleaned. The casing is provided with elongated hubs 0 having prosaidpellers g and It secured thereto, the propellers forming parts of aSllCtlOJ device. Preferably the said propellers are separated from theinner part of the mouth piece containing the beater e, by partitions pof hood 2' formed with openings in and m disposed concentrically of thehubs 0.

In the operation of the apparatus threephase current is supplied to thearmature 0, so that the rotor (l is rapidly rotated, the brushes 7 andribs or cleats e engaging the surface to be cleaned and having a beatingand rubbing action thereon. In apparatus in which the mouthpiece a isconnected by the tubular extension 1?, to an exhauster or air pump thefans or propellers g, h assist the action of the said pump. By the.increased suction action of the combined pump and fans the carpet or thelike is lifted from the floor, so that the beating action is improved.

The apparatus may also be used merely for removing dust from furniture,curtains or the like, in which case the beating apparatus 6 remainsinoperative.

The construction of the beating apparatus and its operating mechanismshown in the figures is particularly simple, and it requires littleroom. Butl wish it to be understood that I do not limit myself to theconstruction shown in the figures 'in which the beating members aremounted on the rotor of the electromotor, but include within the scopeof my invention all modia0 fications as to form and arrangement ofelements as defined by the herein appended claims. 7

The cleaning action is particularly effective, because the beatingmembers impart blows to the carpet or the like which are more or less inthe direction of the surface of the carpet, and the said beaters havethe function to loosen the dust from the carpet,

-so that it is more readily removed by the vacuum device.

The operation of the apparatus and the possibility of moving the sameacross the surface to be cleaned is not in any way interfered with bythe beater, so that the aparatus may be used for cleaning any suraces,such as floors, curtains and furniture.

I claim:

1. In vacuum cleaning apparatus, a, casing having a mouthpiece, a hoodin the mouthpiece, provided with openings in its side walls, incommunication with suction channels formed between the casing and thehood, an electromotor in the hood having a stationary armature fixed. tothe walls of the casing, a rotor surrounding the armature provided withhubs extending into the suction channels, means on the rotor forloosening dust from the surface to be cleaned, and a propeller carriedby each of the hubs of the rotor for producing a suction action wherebydustis led from the hood into said mouthpiece.

2. In a vacuum cleaning apparatus, a mouthpiece having an open bottom, ahood within said mouthpiece and spaced therefrom and open at its bottom,an electromotor within said hood having a stationary inner part securedto the wall. of the mouthpiece and a rotary outer part having hubsextended through said hood into the space included between the same andthe mouthpiece, agitating means extending from said outer rotary partinto the openings of the hood for cleaning the surface below saidopenings andsuction producing devices secured to said hubs within thesaid space of the mouthpiece, said hood being provided with openingsdisposed concentrically of the hubs. V

3. In a vacuum cleaning apparatus, a mouthpiece, a hood within themouthpiece with openings in the side walls, said hood and mouthpiecebeing spaced apart to form suction channels in communication with saidopeningsf-a rotatable member within said hood and mouthpiece, agitatingmeans on said rotatable member for dusting and beating the surface to becleaned, the periphery of said member lyin substantially flush with thebottom of said mouthpiece, electric driving means within said rotatablemember for imparting rotary movement thereto, whereby the surface to beagitated is directly below the open portion of the mouthpiece andexposed to the direct agitating action of the rotatable member, andmeans on the ends of the rotatable member and in the suction channelsfor setting up a suction action in the hood and channels to draw up thesurface to be agitated, against the opening of the hood.

4. A vacuum cleaning apparatus, having a mouthpiece with a wide openingat its base portion, an electromotor within the mouthpiece having itsrotor circumferentially provided with agitating means thereon forloosening and brushing dust from surfaces below the opening of saidmouthpiece, and its armature permanently fixed to the walls of themouthpiece, and suction means on the rotor whereby the dust raised bythe agitating action of the rotor on the surface to be cleaned is drawninto the mouthpiece.

5. A vacuum cleaning apparatus, comprising a casing'with an opening atits base and with dust conducting channels therein, an electromotorwithin the casing and in the chi! nels having an outer rotatable memherwith agitating means extending out of the opening of the base forcleaning surfaces below said opening, and sucking means on the rotatablemember in the channels for drawing up the dust raised by the actionof'the rotatable member through said opening into the dust conductingchannels.

6. A vacuum cleaning apparatus comprising 'a mouthpiece, a hood havingapertures within the mouthpiece dividing the mouthpiece into twocompartments, an electromotor with its shaft fixed to the mouthpiece andwithin the hood compartment, an external rotary peripheral member withinthe hood compartment and rotatable on said shaft, said member having onits circum ference means for loosening dirt on the surface to becleaned, and propellers on the other side of the hood and within themouthpiece compartment and on the rotary member for sucking in the dustfrom the surface to be cleaned, whereb the sucking action of thepropellers will raw the dust into the hood compartment through theapertures and into the upper part of the mouthpiece compartment.

7. In a vacuum cleaning apparatus, havlng an oblong shaped casing withan opening in its base portion, the improvement comprising a hoodenclosed by said casing having openings at opposite sides thereof and acleaning chamber underneath the same, said hood and casing being spacedapart to form suction channels in communication with said openings andthe cleaning chamber, an electromotor extending through the casinghaving a rotor portion provided with agitating means in the hood, andsuction means on the rotor, mounted in the channels whereby uponrotation of said rotor the dust is drawn into the suction channels.

In testimony whereof I hereunto afiix my signature.

CARL OTTO.

